lc75386ne Sanyo Semiconductor Corporation, lc75386ne Datasheet
lc75386ne
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lc75386ne Summary of contents
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... Ordering number : EN*5937 Preliminary Overview The LC75386NE is an electronic volume and tone control IC that can implement a wide range of functions including volume, balance, fader, bass and treble controls, loudness, input switching, and input gain control with a minimal number of external components. Functions • Volume – ...
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... Pin Assignment LC75386NE Top view No. 5937-2/20 ...
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... Equivalent Circuit and Application Circuit Diagram LC75386NE No. 5937-3/20 ...
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... LVRIN, RVRIN, Loudness off Inter-step setting error ATerr Left/right balance BAL Tone Control Block Parameter Symbol Inter-step setting error ATerr Bass control range Gbass Treble control range Gtre Left/right balance BAL LC75386NE = Symbol Conditions V max max All input pins IN Topr Tstg ...
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... Maximum input voltage Control System Timing and Data Format The LC75386NE is controlled by inputting stipulated data serially to the CL, DI, and CE pins. The data consists of a total of 52 bits, of which 8 bits are the address and 44 bits are the actual control data. Note*: The minimum value is determined by the value of the capacitor connected to the TIM pin (pin 20). ...
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... Address Code (B0 to A3) The LC75386NE has an 8-bit address code and can be used on a bus shared with other Sanyo ICs. Address Code (LSB • Control code allocation Input Switching Control (R1 (R2) ...
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... LC75386NE D14 D15 1 dB step 0 dB – step – – – – – – – – ...
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... Channel Selection Control D32 D33 0 0 Initial setup mode: rapid charging 1 0 RCH 0 1 LCH 1 1 Left and right together LC75386NE No. 5937-8/20 ...
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... Zero cross detection disabled (Data is written when CE falls) Zero Cross Signal Detection Block Control D38 D39 D40 D41 Selector Volume Tone Fader Test Mode Control D42 D43 0 0 This bit is used for IC testing and must be set to 0 LC75386NE No. 5937-9/20 ...
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... CR 3 RCT circuit between LCT (RCT) and Vref. • 2-dB step volume control outputs 45 LCOM • Connect these pins to Vref through coupling capacitors to 4 RCOM reduce switching noise. 43 LTIN • Equalizer inputs 6 RTIN LC75386NE Function Notes Continued on next page. No. 5937-10/20 ...
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... A capacitor with a value of a few tens of µF must be connected between Vref and AV 57 Vref supply ripple in the • Power supply • Logic system ground SS LAV 29 SS • Analog system ground RAV 22 SS LC75386NE Function ( reduce power voltage generation block. DD Notes Continued on next page. No. 5937-11/20 ...
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... Chip enable. Data is written to the internal latch when this pin is switched from high to low, and the analog switches 24 CE operate.Transfer data becomes enable when this pin is at high level. 44 LVROUT • 1-dB step volume control outputs 5 RVROUT LC75386NE Function level forcibly sets the fader SS Notes No. 5937-12/20 ...
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... Internal Equivalent Circuits Selector Block Equivalent Circuit Total resistance The right channel is identical. Unit (resistance: ) LC75386NE No. 5937-13/20 ...
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... Volume Control Block Equivalent Circuit · Total resistance in the tap: 195 k Initial settings switch · Total resistance in the tap: 30.847 k LC75386NE The right channel is identical. Unit (resistance the left channel 1-dB block No. 5937-14/20 ...
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... Volume Control Block Equivalent Circuit From the left channel 2-dB block Initial settings switch Tone Control Block Equivalent Circuit Unit (resistance: ) LC75386NE Initial settings switch Unit (resistance: ) Total resistance The right channel is identical. No. 5937-15/20 ...
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... External Capacitor Calculations The LC75386NE external capacitors are the structural components in semiconductor inductors, i.e. simulated inductors. This section presents the equivalent circuit and the formulas used to calculate the desired center frequencies. Semiconductor inductor equivalent circuit Z : Impedance at resonance 0 Sample calculation Specifications: 1. Center frequency ...
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... Fader Volume Control Block Equivalent Circuit If data corresponding to a – is send to the 1-dB step main volume, S1 and S2 will be set open and S3 and S4 will be turned on at the same time. LC75386NE When FADER = 1, S2 and S3 will be on. When FADER = 0, S1 and S4 will be on. Unit (resistance: ) Total resistance ...
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... Operating Principles of the Zero Cross Switching Circuit The LC75386NE provides a function that switches the signal detection location of the zero cross comparator. This means an optimal location for block for data update can be selected. Basically, switching noise can be minimized by inputting the signal from immediately after the block that modifies the data to the zero cross comparator. Therefore, the detection location needs to be changed each time the IC control settings are changed ...
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... The LC75386NE data format consists of 8 bits of address and 44 bits of data. Use the data transfer format shown in the figure below when transmitting data in multiples of 8 bits (i.e. when sending 48 bits of data). ...
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... SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of May, 1998. Specifications and information herein are subject to change without notice. LC75386NE PS No. 5937-20/20 ...